As anybody who owns an EAA witness pistol probably knows, the bluing isn't as deep as it could be, so they'll begin to rust fairly quickly if given half a chance. I slipped up, and allowed a small bit of rust to develop at the bottom rear of the grip frame, so I ordered a can of the Teflon/moly bake-on spray finish from Brownells.
At $28 per 6-ounce can, it's a little steep, but this stuff is pretty damn good! All it takes is to degrease the part (I used acetone), spray it on in an even coat, and let it air-dry for about 20 minutes. Once dry, stick the part in an oven at 300 degrees for 30 minutes. Let the part cool, and you're done. I tested it on a chrome-plated wrench (we all know how hard it is to get anything to stick to chrome), and after baking and allowing it to cool, I was unable to scratch the finish with my thumbnail, try as I might.
I also cold-blued the barrel with Birchwood-Casey "perma Blue" just for the hell of it.
Anyway, my Witness compact has gone from this:
To this: